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The 400i is the midrange of planar magnetic headphones, featuring a wonderful sound and superb comfort. We recommend pairing it with an amp.

The spectacular bass of the HE-400 series continues its tradition with the 400i. Lighter weight than most planar magnetics, the 400i makes it better for long use sessions like gaming. The powerful bass and stunning mid range make it perfect for just that. The sensitive drivers require only a modest amp for this unit to reach its full potential, and Hifiman tells us it even sounds good just plugged right into a smartphone!

  • Superb bass and mid-range sounds
  • Lighter weight
  • Minimal amp requirement
Regular Price
Sale Price
Features from the manufacturer
  • Increased efficiency of 93dB allows the HE400i to be driven with a modest size amplifier or even with a portable audio player or smartphone
  • Massive diaphragm allows high signal input and flexible bass and treble
  • Very fast response time due to the lightweight diaphragm design
  • Evenly distributed magnetic force for low distortion and reproduction of live sound
  • ABS polymer ear cups in a gloss charcoal finish give the HE400i a striking contemporary look
  • Improved pressure pattern is designed to provide best-in-class comfort
  • Specially designed beveled ear pads are made of pleather and velour, which provide both increased comfort and improved sound quality
  • Fit: Over Ear
  • Jack plug: 3.5 mm
  • Transducer type: Planar Magnetic
  • Frequency Response: 20Hz-35KHz
  • Impedance: 35 Ohms
  • Sensitivity: 93 dB
  • Maximum Power Handling: 6W
  • Weight: 13.05 Oz/370g/0.82 lb
What's in the Box
  • Headphone Cable (4.9 Ft/1.5m;3.5mm plug)
  • Earpads: 1 Pair (on the Headphone)
  • ¼" (6.35mm) headphone adapter